|Magnetic properties of Heusler alloys - Stephenson, Edward Beattie|
Thesis (Ph.D.)--University of Illinois, 1910
Keywords: Ferromagnetic materials; Magnetic alloys; Theses
|The State of NASA's Information Power Grid - Johnston, William E.|
This viewgraph presentation transfers the concept of the power grid to information sharing in the NASA community. An information grid of this sort would be characterized as comprising tools, middleware, and services for the facilitation of interoperability, distribution of new technologies, human collaboration, and data management. While a grid would increase the ability of information sharing, it would not necessitate it...
Keywords: COMPUTATION; DIFFERENTIAL EQUATIONS; MAGNETIZATION; FERROMAGNETIC MATERIALS; ALGORITHMS
|Structure and Magnetic Behaviors of melt-spun Ti1.4V0.6Ni alloy Containing Icosahedral|
The ribbons of Ti1.4V0.6Ni and TiVNi alloys were synthesized by arc-melting and subsequent melt-spinning techniques. The structures and magnetic properties were investigated. The results showed that the icosahedral quasicrystal, Ti2Ni-type face centered cubic phase and body centered cubic structural solid solution phase existed in Ti1.4V0.6Ni alloy, andthe Ti2Ni-type FCC phase and BCC solid solution phase presented in TiVNi alloy...
Keywords: Alloys; Magnetic properties; Magnetic behavior; Icosahedral quasicrystal; Ferromagnetic properties
|Microwave Ultrasonics in Solid State Physics - J. W. Tucker & V. W. Rampton|
J. W. Tucker & V. W. Rampton Microwave Ultrasonics in Solid State Physics North-Holland Publishing Company 1972 Acrobat 7 Pdf 18.4 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Electronics; Physics; Piezoelectric; Dielectric; Ferromagnetic; Paramagnetic; Semiconductor; Semiconductors; Metals; Light
|Motion picture photography of variation processes of the domain structure of thin ferromagnetic films in a magnetic field - Buravikhin, V. A.|
Motion picture photography of variation processes of domain structure of thin ferromagnetic films in magnetic field
Keywords: FERROMAGNETIC FILMS; MAGNETIC DOMAIN; METAL FILM; MOTION PICTURE; THIN FILM; FERROMAGNETISM; MAGNETIC DOMAINS; MAGNETIC FIELDS; METAL FILMS; MOTION PICTURES; PHOTOGRAPHY; THIN FILMS; FERROMAGNETIC FILM
|Development of a Model for the Night Side Magnetopause Using Global Simulations - Raeder, Joachi|
During the investigation we have finalized the event studies that are necessary for the development of the magnetopause model and for the calibration of our simulation code.
Keywords: ACTUATORS; FERROMAGNETIC MATERIALS; MAGNETOSTRICTION; OPTIMAL CONTROL; NONLINEARITY; PERTURBATION; MAGNETOMECHANICS (PHYSICS); CONTROL THEORY; CHARACTERIZATION; HYSTERESIS
|Modeling Study of Mesospheric Planetary Waves: Genesis and Characteristics - Mayr, H. G.|
In preparation for the measurements from the TIMED mission and coordinated ground based observations, we discuss results for the planetary waves (PWs) that appear in our Numerical Spectral Model (NSM). The present model accounts for a tropospheric heat source in the zonal mean (m = 0), which reproduces qualitatively the observed zonal jets near the tropopause and the accompanying reversal in the latitudinal temperature variations...
Keywords: COMPUTERIZED SIMULATION; FERROMAGNETIC MATERIALS; SUPERCONDUCTORS (MATERIALS); SHIELDING; FAILURE; SUPERCONDUCTIVITY; REFRIGERATORS; MAGNETIC COOLING
|Seasonal Distribution of African Savanna Fires - Cahoon, Donald R.|
Savannas consist of a continuous layer of grass interspersed with scattered trees or shrubs, and cover approx. 10 million square kilometers of tropical Africa. African savanna fires, almost all resulting from human activities, may produce as much as a third of the total global emissions from biomass burning. Little is known, however, about the frequency and location of these fires, and the area burned each year...
Keywords: MAGNETOACOUSTICS; EMISSION SPECTRA; FERROMAGNETIC MATERIALS; TENSILE STRESS; MICROSTRUCTURE; MAGNETIC FIELDS; LOW CARBON STEELS; ELECTRIC FIELDS
|Audio interview with Michael Flynn and Marco Riolo - Matthew Silverman|
Audio interview with Michael Flynn and Marco Riolo at Grand Rapids Artprize 2009. Ferromagnetic Fluid and Angels versus Evil
Keywords: Audio interview; Michael Flynn; Marco Riolo; Grand Rapids; Artprize; 2009; Ferromagnetic Fluid; Angels versus Evil
|Analysis control and design of a mechanical system subject to vibrations - Aranda, M. A. E|
Analysis, control, and design of mechanical systems subject to vibrations
Keywords: JOULE-THOMSON EFFECT; MAGNETIC MOMENTS; MAGNETOSTRICTION; ELECTRIC CURRENT; FERROMAGNETIC MATERIALS; MAGNETIC FIELDS
|Technology 2003: The Fourth National Technology Transfer Conference and Exposition, volume 1 - NON|
Proceedings from symposia of the Technology 2003 Conference and Exposition, December 7-9, 1993, Anaheim, CA, was discussed. Volume 1 features the Plenary Session and the Plenary Workshop, plus papers presented in Advanced Manufacturing, Biotechnology/Medical Technology, Environmental Technology, Materials Science, and Power and Energy.
Keywords: CRACK TIPS; CRACKS; DEFECTS; EDDY CURRENTS; ELECTROMAGNETIC SHIELDING; FERROMAGNETIC MATERIALS; CORROSION; ELECTRIC COILS; MAGNETIC PROPERTIES
|Design and Testing of Non-Toxic RCS Thrusters for Second Generation Reusable Launch Vehicle - Calvignac, Jacky|
Under NASA sponsorship, Northrop Grumman Space Technology (NGST) designed, built and tested two non-toxic, reaction control engines, one using liquid oxygen (LOX) and liquid hydrogen (LH2) and the other using liquid oxygen and ethanol. This paper presents the design and testing of the LOX/LH2 thruster. The two key enabling technologies are the coaxial liquid-on-liquid pintle injector and the fuelcooling duct...
Keywords: SOLID WASTES; FERRITES; GASIFICATION; MICROGRAVITY; FERROMAGNETIC MATERIALS; ASHES; FILTRATION; POROSITY; COBALT; CALCIUM COMPOUNDS
|Galactic oscillator symmetry - Rosensteel, Georg|
Riemann ellipsoids model rotating galaxies when the galactic velocity field is a linear function of the Cartesian coordinates of the galactic masses. In nuclear physics, the kinetic energy in the linear velocity field approximation is known as the collective kinetic energy. But, the linear approximation neglects intrinsic degrees of freedom associated with nonlinear velocity fields. To remove this limitation, the theory of symplectic dynamical symmetry is developed for classical systems...
Keywords: CRACK PROPAGATION; FERROMAGNETIC MATERIALS; EDDY CURRENTS; ELECTROMAGNETIC MEASUREMENT; FATIGUE (MATERIALS); FAULT DETECTION; MAGNETIC FLUX; NONDESTRUCTIVE TESTS; CURRENT DISTRIBUTION; FATIGUE TESTS
|X-band uplink ground systems development - Hartop, R.|
The design of an X-band exciter and transmitter control system is presented. For the exciter design such aspects as the block diagram, expected oscillator frequency stability, effect of instability of the cables between the control room and the antenna, improvement in uplink stability obtained with the transmitter phase control loop, expected frequency stability of exciter references for the doppler extractors, expected performance of the X-band range modulator, and the frequency stability impro...
Keywords: AEROSPACE ENVIRONMENTS; SPACE PROCESSING; SPACE PROCESSING APPLICATIONS ROCKET; BLACK BRANT SOUNDING ROCKETS; CRYSTALLIZATION; CRYSTALLOGRAPHY; FERROMAGNETIC MATERIALS; MICROGRAVITY APPLICATIONS; SPACE COMMERCIALIZATION
|Physics 12, Basic Ideas regarding Magnets - Patrick Bruskiewich|
This is a talk given to physics 12 about the basic ideas regarding permanent and non-permanent magnets. The talk also looks at the orbitals of ferromagnetic materials and rare earth materials.
Keywords: Physics 12; Basic Ideas regarding Magnets; permanent and non-permanent magnets; ferromagnetic materials; rare earth materials, Pythagoras Publishing
|Aerothermal environment in control surface gaps in hypersonic flow: An overview - Wieting, A. R.|
Experimental and analytical research to develop an understanding of the fluid and thermal environment in control surface gaps such as the spanwise gap of the wing elevon and chordwise gap of a split elevon configuration typical of the Space Shuttle are summarized. Although the experimental and analytical studies were initiated too late to significantly impact the Shuttle design they do provide a fundamental understanding of the basic fluid/thermal environment in control surface gaps and help to ...
Keywords: CRYSTALLIZATION; FERROMAGNETIC MATERIALS; MATHEMATICAL MODELS; MELTS (CRYSTAL GROWTH); MICROGRAVITY APPLICATIONS; SPACE COMMERCIALIZATION; FLUID FLOW; NUCLEATION; SOLIDIFICATION; SPACE PROCESSING; WELDING; ADAPTIVE CONTROL; ALUMINUM ALLOYS; CRYSTAL GROWTH
|Developing OSL Geological Dating Techniques for Use on Future Missions to Mars - Blair, M. W.|
The surface of Mars has been subject to aeolian, fluvial, and periglacial activity in the (relatively) recent past. Unfortunately, chronological dating of recent events on Mars is difficult as the errors associated with crater counting are comparable to younger ages (approx. 1 Ma). Consequently, techniques to quantify the ages of geological processes on Mars have become an important area of research...
Keywords: MINERALS; MARS SURFACE; HEMATITE; CURIE TEMPERATURE; FERROMAGNETIC MATERIALS; TITANIUM; CRYSTALS; MAGNETITE; FREQUENCY RANGES; MAGNETIC MATERIALS; MARS (PLANET); MAGNETIC PROPERTIES; ELECTROMAGNETISM; RADAR ATTENUATION; TEMPERATURE DEPENDENCE; DUST
|Naturally induced secondary radiation in interplanetary space: Preliminary analyses for gamma radiation and radioisotope production from thermal neutron activation - Plaza-Rosado, Heribert|
Thermal neutron activation analyses were carried out for various space systems components to determine gamma radiation dose rates and food radiation contamination levels. The space systems components selected were those for which previous radiation studies existed. These include manned space vehicle radiation shielding, liquid hydrogen propellant tanks for a Mars mission, and a food supply used as space vehicle radiation shielding...
Keywords: FAILURE ANALYSIS; CONTRACTION; COOLING; DISTORTION; HEAT TREATMENT; MAGNETOACOUSTICS; RIMS; SOLIDIFICATION; WHEELS; X RAY DIFFRACTION; FERROMAGNETIC MATERIALS; INCONEL (TRADEMARK); IRON ALLOYS; RAIL TRANSPORTATION; RESIDUAL STRESS; STRESS ANALYSIS; STRESS MEASUREMENT; WELDED STRUCTURES
|Collisional Shift and Broadening of Iodine Spectral Lines in Air Near 543 nm - Fletcher, D. G.|
The collisional processes that influence the absorption of monochromatic light by iodine in air have been investigated. Measurements were made in both a static cell and an underexpanded jet flow over the range of properties encountered in typical compressible-flow aerodynamic applications. Experimentally measured values of the collisional shift and broadening coefficients were 0.058 /- 0.004 and 0.53 /- 0.010 GHz K(exp 0.7)/torr, respectively...
Keywords: EXPOSURE; REGOLITH; MOON; LOW CONCENTRATIONS; LITHOLOGY; IRON OXIDES; IMPACT MELTS; EJECTA; DEPTH; DECOUPLING; CRATERS; CHEMICAL COMPOSITION; APOLLO 16 FLIGHT; NEUTRON ACTIVATION ANALYSIS; SOIL SAMPLING; ANORTHOSITE; FERROMAGNETIC RESONANCE; SOILS; SINTERING; ROCKS
|MIT3.014F06 - MIT OpenCourseWare|
Keywords: electron; electronic properties; magnetism; magentic properties; structure; crystal; lattice; energy; thermodynamics; differential scanning calorimetry (DSC); x-ray diffraction (XRD); scanning probe microscopy (AFM; STM); scanning electron microscopy (SEM); UV/Vis; Raman spectroscopy; FTIR spectroscopy; x-ray photoelectron spectroscopy (XPS); vibrating sample magnetometry (VSM); dynamic light scattering (DLS); phonon; quantum; quantum mechanics; radiation; battery; fuel cell; ferromagnetism; ferromagnetic; polymer; glass; corrosion